Choden, Sangay, 		Yangchen, Ugyen, AND 		Tenzin, Jigme.
" Evaluation on Efficacy of Piper nigrum as a bio-pesticide against Sitophilus zeamais" <em>Naresuan University Journal: Science and Technology (NUJST)</em> [Online], Volume 29 Number 2 (2 November 2020)